1 /*
2 * RAW dvbsub demuxer
3 * Copyright (c) 2015 Michael Niedermayer <michaelni@gmx.at>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
23
26
27
29 {
30 int i, j, k;
33 int max_score = 0;
34
36 if (p->
buf[i] == 0x0f) {
40 for(j=0; ptr + 6 <
end; j++) {
41 if (*ptr != 0x0f)
42 break;
43 type = ptr[1];
44 //page_id = AV_RB16(ptr + 2);
46 if (type == 0x80) {
47 ;
48 } else if (type >= 0x10 && type <= 0x14) {
49 histogram[type - 0x10] ++;
50 } else
51 break;
53 }
54 for (k=0; k < 4; k++) {
55 min =
FFMIN(min, histogram[k]);
56 }
57 if (min && j > max_score)
58 max_score = j;
59 }
60 }
61
62 if (max_score > 5)
64
65 return 0;
66 }
67